CaF2
Calcium Fluoride
Calcium Fluoride (CaF2), with its characteristic of low distributions has a long history in imaging fields.
With its high transparency, it is used as an optical material for excimer laser, semi-conductor. In this market, high laser durability and transparency are expected.
NK&K not only produce CaF2 from crystal growth to processing but makes its evaluation within the company. From IR grade to ArF Grade, NK&K supplies various grade of high quality Calcium Fluorides.
ArF Grade Transmittance
IR , UV Grade Transmittance
Transmittance and Laser durability of ArF Grade is VUV region
(Transmittance before and after ArF Laser Irradiation)
Standard Spec
- Diameter : 250mm (Max)
- Thickness : 100mm
- Homogeneous : 1ppm or less
- Birefringence : 1nm/cm or less
CaF2 Refractive Index
(Typical data of dispersion and measured value)
